Coil for dynamo-electric machines.



W. T. HENSLEY. I COIL FOR DYNAMO ELECTRIC MACHINES.

APPLICATION TILED JAN. 10, 1908.

Patented May 17, 1910.

Fz'y. 3.

. QVENTOR WITNESSES.

. v- I I ATTORNEY UNITED STATES P gEN OFFICE.

WILLIAM T. HENSLEY, OF WILKINSBURG, PENNSYLVANIA, ASSIGNOR, 'B Y MESNE ASSIGNMENTS, TO WESTINGHOUSE ELECTRIC KG-MANUFACTURING COMPANY, OF EAST PITTSBURG, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

To all whom it may concern:

Be it known that I, WiLLiAM T. HENSLEY, a citizen of the United States, and a resident of Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Coils for Dynamo-Electric Machines, of which the following is aspecification.

My invention relates to coils for (1 name.- electric machines, and it has s ecia reference to coils of the so-called diamond type which are adapted to form parts of wave windings for use with machines of the commnt-ator type. i

The ob ect of my invention is to provide a coil of the class above indicated that shall be simple in construction and the strands or turns of which shall be adwintageously disposed.

When direct current electric motors and generators, or other dynamo-electric machines having commutators, are provided with complete wave windings having coils of the dlamond type, the end-connecting portions of the assembled coils are close to-- gethcr and form two layers, one within the other.

at least one of them was necessarily broiwht radially inward or outward from the inside of the layers referred to above. The leads were then bent in opposite directions and carried to the commutator bars along any suitable lines following the general direction of the axis of the machine.

According to my present invention, the

short radial portion of the leads which was 1 usually crowded between: adjacent coils is entirely avoided, the coil itself and the meth of winding the same being such .that the leads are brought out. from, and

broken lines and developed into a single Specification 0! Letters Patent.

where the are side by side.

In the prior art, the coil leads were so related to the remainder of the coil that COIL FOR DYNAMO-ELECTRIC MACHINES.

Patented May 17, 1910.

Application flied January 10, 1908. Serial No. 410,147.

plahe, and Fig. 3 is a plan view of the parts disclosed 1n Fig. 2.

Referring to the drawings, the coil here of which the coil is wound are side by side and the turns of the coil are one above another, except at the offset bends c and m, The cneral form oft 1e coil is that of the well (nown diamond t pe having parallel straight portions f an y, which are located in the usual core slots of a dynamo-electric machine, and substantially V-shaped end-connecting portions it and 2' which embody the oilset bends i d, and m and join-the extremities of the straight portions 7 and g which project from the core slots. The coil leads 7.: and 0 project from the straight portions f and g and at the same end of the core of the machine, the lead /0 forming a continuation of the undermost turn of the straight portion 7" and the lead 0 forming a continuation of the uppermosttnrn of the straightportion g. These leads may, of course, extend to the commutator of the machine in any suitable manner, but usually form, in a wave winding, an angle with the straight portion of the coil which corresponds to that of the adjacent portion of the end-connector. By employing a coil of the form above indicated, the cross-over, which usually occurs between the lead and the end portion of the closed turn and produces an undesirable radial section which is crowded between portions of adjacent coils at the commutator end of the core, is located at the opposite end of the core where it is readily taken care of without producing any undesirable results.

It will be understood that the number and I having a plurality of turns each of which com uses a plurality of side-by-side strap con uctors and has an ofiset bend, the turns being disposed one above another,vexcept at the ofiset bends, where they are disposed side-by-side.

4. A substantiall hexa onal coil for dynamo-electric mac ines, aving two relatively lon ,substantially paralle and equal sides, a p urality of turns of wire or strap conductor which have corresponding offset bends, the turns being disposed one above another, except at said offset bends, where they are disposed side-by-side, and terminal portions that extend outwardl from laterally o posite corners of the co' 5. 18 mil for dynamo-electric machines havin terminal portions and comprising a lura 1ty of multi-strand turns, each turn aving a corresponding ofiset bend at one 7 ing two substantially parallel sidesi end, the turns being dispo d one above other except at the ofiset bends where the are side-by-side and the terminal portions being connected respectively to the uppermost and the undermost turn of the coil.

-6. A substantially diamond sha ed armature coil for dynamo-electric mac ines hav- V shaped end portions and integral termina. portions and comprising a plurality of multi-strand turns, each turn having a corresponding ofiset bend at one end, the turns bem dis sed one above another except at the 0 set ends where they are side-by-side and the terminal portions being, res ectively, continuations of the up ermost an the undermost turn of the co' 7. A coil for dynamo-electric machines comprising a closed multi-strand turn havmg an offset bend at each end and an 0 en multi-strand turn having an offset ben at one end, the turns being disposed one above another except at the correspondin ofiset bends where they are disposed sidey-side. In testimony whereof, I have hereunto subscribed my name this 31st day of Dec,

WILLIAM T. HENSLEY. Witnesses: R. J. DEARBORN, BmNEY Emma. 

